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Math 20 Midterm 2010

Chapter 1 full detail.

Isolate for Varible y: -7y+8=-10x+12 y=1.43x+-0.57
What is substitution? An algebraic way of solving for y. Instead of solving for y, the first part of the second equation (before the equal sign) is moved to the very first part of the equation, usually the x.
What is elimation? Same way as Substitution, but instead of changing the values we just take them out, by number of that value of course
Translate this: the diffrence of two digits is 15 x-y=15
Created by: 1025956631